error in SignalSpy

[houmingc]

2 error in SignalSpy
Type TestCase unavailable
module "Qt.test.qttestroot" is not installed.

@

import QtQuick 2.2
import QtQuick.Controls 1.1
import QtTest 1.0

ApplicationWindow {
visible: true
width: 640
height: 480
title: qsTr("Hello World")

menuBar: MenuBar {
    Menu {
        title: qsTr("File")
        MenuItem {
            text: qsTr("Exit")
            onTriggered: Qt.quit();
        }
    }
}

Button{
    id:button
    SignalSpy{
        id:spy
        target:button
        signalName: "clicked"
    }
    TestCase{
        name:"ButtonClick"
        function test_click(){
            compare(spy.count,0)
            button.clicked();
            compar(spy.count,1)
        }

    }
}

Text {
    text: qsTr("Hello World")
    anchors.centerIn: parent
}

}

@